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Goodwill And Other Intangible Assets (Scheduled Amortization Of Intangible Assets For Next Five Years) (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Goodwill And Other Intangible Assets [Abstract]  
2018 $ 10,810
2019 10,468
2020 10,304
2021 10,283
2022 9,755
Amortization estimate, Total $ 51,620